Do you have practical experience in testing software products?

Yes, I have practical experience in testing software products using C#. I have used various types of testing, including:

• Unit Testing with frameworks like NUnit and MSTest to verify individual methods and classes.
• Integration Testing to check the interaction between components.
• Automated UI Testing using tools such as Selenium.

An example of a simple unit test in C# with NUnit:

using NUnit.Framework;

[TestFixture]
public class CalculatorTests
{
    [Test]
    public void Add_TwoNumbers_ReturnsSum()
    {
        var calculator = new Calculator();
        int result = calculator.Add(2, 3);
        Assert.AreEqual(5, result);
    }
}

This approach helps identify errors early in development and maintain code quality.